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Chapter 8 - TCP/IP Services / TCP/IP Services Reference

Constants and Data Types

IP Multicast Address Structure

You use the IP multicast address structure with the IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP options (page 8-35) when you are adding or dropping membership in an IP multicast address. The IP multicast address structure is defined by the TIPAddMulticast data type.

struct TIPAddMulticast {
   InetHost multicastGroupAddress;
   InetHost interfaceAddress;
};

Field Description

multicastGroupAddress

The IP address of the multicast group for which you want to add or drop membership.

interfaceAddress

The IP address of the network interface that you are using for the multicast group.